Display screen with an animated graphical user interface



FIG. 1 is a front view of a first image in a sequence for a display screen with an animated graphical user interface showing the claimed design.

FIG. 2 is a front view of a second image thereof; and,

FIG. 3 is a front view of a third image thereof.

The broken lines in the figures showing a display screen, electronic device, and portions of the graphical user interface, including the ice cream cone, bushes, trees and clouds, are for illustrative purposes only and form no part of the claimed design.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1 through 3. The process or period in which one image transitions to another image forms no part of the claimed design. 

CLAIM The ornamental design for display screen with an animated graphical user interface, as shown and described. 